Question

point slope form equation that passes through (1,-1), and (2,0)

Answer 1

Given a line with gradient m that is passing through a point (x1, y1). Then the equation

of the line in point-slope form is

$y-y_1=m(x-x_1)$$m=\frac{y_2-y_1}{x_2-x_1}$$m=\frac{-1-0}{1-2}=\frac{-1}{-1}=1$

(x1, y1) = (2, 0)

Therefore

in point slope form

y-0=1(x - 2)

y = x - 2